whatcanGOwrong

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: mattn # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/.github/workflows/test.yml

@@ -0,0 +1,36 @@
+name: test
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        go:
+          - '1.20'
+          - '1.19'
+          - '1.18'
+          - '1.17'
+    steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+      - uses: actions/checkout@v2
+      - name: test
+        shell: bash
+        run: |
+          ./go.test.sh
+      - name: upload coverage report
+        uses: codecov/codecov-action@v2
+        with:
+          env_vars: OS,GO
+        env:
+          OS: ${{ matrix.os }}
+          GO: ${{ matrix.go }}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/LICENSE

@@ -0,0 +1,9 @@
+Copyright (c) Yasuhiro MATSUMOTO <mattn.jp@gmail.com>
+
+MIT License (Expat)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/README.md

@@ -0,0 +1,50 @@
+# go-isatty
+
+[![Godoc Reference](https://godoc.org/github.com/mattn/go-isatty?status.svg)](http://godoc.org/github.com/mattn/go-isatty)
+[![Codecov](https://codecov.io/gh/mattn/go-isatty/branch/master/graph/badge.svg)](https://codecov.io/gh/mattn/go-isatty)
+[![Coverage Status](https://coveralls.io/repos/github/mattn/go-isatty/badge.svg?branch=master)](https://coveralls.io/github/mattn/go-isatty?branch=master)
+[![Go Report Card](https://goreportcard.com/badge/mattn/go-isatty)](https://goreportcard.com/report/mattn/go-isatty)
+
+isatty for golang
+
+## Usage
+
+```go
+package main
+
+import (
+	"fmt"
+	"github.com/mattn/go-isatty"
+	"os"
+)
+
+func main() {
+	if isatty.IsTerminal(os.Stdout.Fd()) {
+		fmt.Println("Is Terminal")
+	} else if isatty.IsCygwinTerminal(os.Stdout.Fd()) {
+		fmt.Println("Is Cygwin/MSYS2 Terminal")
+	} else {
+		fmt.Println("Is Not Terminal")
+	}
+}
+```
+
+## Installation
+
+```
+$ go get github.com/mattn/go-isatty
+```
+
+## License
+
+MIT
+
+## Author
+
+Yasuhiro Matsumoto (a.k.a mattn)
+
+## Thanks
+
+* k-takata: base idea for IsCygwinTerminal
+
+    https://github.com/k-takata/go-iscygpty

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/doc.go

@@ -0,0 +1,2 @@
+// Package isatty implements interface to isatty
+package isatty

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/example_test.go

@@ -0,0 +1,18 @@
+package isatty_test
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/mattn/go-isatty"
+)
+
+func Example() {
+	if isatty.IsTerminal(os.Stdout.Fd()) {
+		fmt.Println("Is Terminal")
+	} else if isatty.IsCygwinTerminal(os.Stdout.Fd()) {
+		fmt.Println("Is Cygwin/MSYS2 Terminal")
+	} else {
+		fmt.Println("Is Not Terminal")
+	}
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/go.mod

@@ -0,0 +1,5 @@
+module github.com/mattn/go-isatty
+
+go 1.15
+
+require golang.org/x/sys v0.6.0

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/go.sum

@@ -0,0 +1,2 @@
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/go.test.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+echo "" > coverage.txt
+
+for d in $(go list ./... | grep -v vendor); do
+    go test -race -coverprofile=profile.out -covermode=atomic "$d"
+    if [ -f profile.out ]; then
+        cat profile.out >> coverage.txt
+        rm profile.out
+    fi
+done

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_bsd.go

@@ -0,0 +1,20 @@
+//go:build (darwin || freebsd || openbsd || netbsd || dragonfly || hurd) && !appengine && !tinygo
+// +build darwin freebsd openbsd netbsd dragonfly hurd
+// +build !appengine
+// +build !tinygo
+
+package isatty
+
+import "golang.org/x/sys/unix"
+
+// IsTerminal return true if the file descriptor is terminal.
+func IsTerminal(fd uintptr) bool {
+	_, err := unix.IoctlGetTermios(int(fd), unix.TIOCGETA)
+	return err == nil
+}
+
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_others.go

@@ -0,0 +1,17 @@
+//go:build (appengine || js || nacl || tinygo || wasm) && !windows
+// +build appengine js nacl tinygo wasm
+// +build !windows
+
+package isatty
+
+// IsTerminal returns true if the file descriptor is terminal which
+// is always false on js and appengine classic which is a sandboxed PaaS.
+func IsTerminal(fd uintptr) bool {
+	return false
+}
+
+// IsCygwinTerminal() return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_others_test.go

@@ -0,0 +1,20 @@
+//go:build !windows
+// +build !windows
+
+package isatty
+
+import (
+	"os"
+	"testing"
+)
+
+func TestTerminal(t *testing.T) {
+	// test for non-panic
+	t.Log("os.Stdout:", IsTerminal(os.Stdout.Fd()))
+}
+
+func TestCygwinPipeName(t *testing.T) {
+	if IsCygwinTerminal(os.Stdout.Fd()) {
+		t.Fatal("should be false always")
+	}
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_plan9.go

@@ -0,0 +1,23 @@
+//go:build plan9
+// +build plan9
+
+package isatty
+
+import (
+	"syscall"
+)
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd uintptr) bool {
+	path, err := syscall.Fd2path(int(fd))
+	if err != nil {
+		return false
+	}
+	return path == "/dev/cons" || path == "/mnt/term/dev/cons"
+}
+
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_solaris.go

@@ -0,0 +1,21 @@
+//go:build solaris && !appengine
+// +build solaris,!appengine
+
+package isatty
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+// see: https://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libc/port/gen/isatty.c
+func IsTerminal(fd uintptr) bool {
+	_, err := unix.IoctlGetTermio(int(fd), unix.TCGETA)
+	return err == nil
+}
+
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_tcgets.go

@@ -0,0 +1,20 @@
+//go:build (linux || aix || zos) && !appengine && !tinygo
+// +build linux aix zos
+// +build !appengine
+// +build !tinygo
+
+package isatty
+
+import "golang.org/x/sys/unix"
+
+// IsTerminal return true if the file descriptor is terminal.
+func IsTerminal(fd uintptr) bool {
+	_, err := unix.IoctlGetTermios(int(fd), unix.TCGETS)
+	return err == nil
+}
+
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_windows.go

@@ -0,0 +1,125 @@
+//go:build windows && !appengine
+// +build windows,!appengine
+
+package isatty
+
+import (
+	"errors"
+	"strings"
+	"syscall"
+	"unicode/utf16"
+	"unsafe"
+)
+
+const (
+	objectNameInfo uintptr = 1
+	fileNameInfo           = 2
+	fileTypePipe           = 3
+)
+
+var (
+	kernel32                         = syscall.NewLazyDLL("kernel32.dll")
+	ntdll                            = syscall.NewLazyDLL("ntdll.dll")
+	procGetConsoleMode               = kernel32.NewProc("GetConsoleMode")
+	procGetFileInformationByHandleEx = kernel32.NewProc("GetFileInformationByHandleEx")
+	procGetFileType                  = kernel32.NewProc("GetFileType")
+	procNtQueryObject                = ntdll.NewProc("NtQueryObject")
+)
+
+func init() {
+	// Check if GetFileInformationByHandleEx is available.
+	if procGetFileInformationByHandleEx.Find() != nil {
+		procGetFileInformationByHandleEx = nil
+	}
+}
+
+// IsTerminal return true if the file descriptor is terminal.
+func IsTerminal(fd uintptr) bool {
+	var st uint32
+	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, fd, uintptr(unsafe.Pointer(&st)), 0)
+	return r != 0 && e == 0
+}
+
+// Check pipe name is used for cygwin/msys2 pty.
+// Cygwin/MSYS2 PTY has a name like:
+//   \{cygwin,msys}-XXXXXXXXXXXXXXXX-ptyN-{from,to}-master
+func isCygwinPipeName(name string) bool {
+	token := strings.Split(name, "-")
+	if len(token) < 5 {
+		return false
+	}
+
+	if token[0] != `\msys` &&
+		token[0] != `\cygwin` &&
+		token[0] != `\Device\NamedPipe\msys` &&
+		token[0] != `\Device\NamedPipe\cygwin` {
+		return false
+	}
+
+	if token[1] == "" {
+		return false
+	}
+
+	if !strings.HasPrefix(token[2], "pty") {
+		return false
+	}
+
+	if token[3] != `from` && token[3] != `to` {
+		return false
+	}
+
+	if token[4] != "master" {
+		return false
+	}
+
+	return true
+}
+
+// getFileNameByHandle use the undocomented ntdll NtQueryObject to get file full name from file handler
+// since GetFileInformationByHandleEx is not available under windows Vista and still some old fashion
+// guys are using Windows XP, this is a workaround for those guys, it will also work on system from
+// Windows vista to 10
+// see https://stackoverflow.com/a/18792477 for details
+func getFileNameByHandle(fd uintptr) (string, error) {
+	if procNtQueryObject == nil {
+		return "", errors.New("ntdll.dll: NtQueryObject not supported")
+	}
+
+	var buf [4 + syscall.MAX_PATH]uint16
+	var result int
+	r, _, e := syscall.Syscall6(procNtQueryObject.Addr(), 5,
+		fd, objectNameInfo, uintptr(unsafe.Pointer(&buf)), uintptr(2*len(buf)), uintptr(unsafe.Pointer(&result)), 0)
+	if r != 0 {
+		return "", e
+	}
+	return string(utf16.Decode(buf[4 : 4+buf[0]/2])), nil
+}
+
+// IsCygwinTerminal() return true if the file descriptor is a cygwin or msys2
+// terminal.
+func IsCygwinTerminal(fd uintptr) bool {
+	if procGetFileInformationByHandleEx == nil {
+		name, err := getFileNameByHandle(fd)
+		if err != nil {
+			return false
+		}
+		return isCygwinPipeName(name)
+	}
+
+	// Cygwin/msys's pty is a pipe.
+	ft, _, e := syscall.Syscall(procGetFileType.Addr(), 1, fd, 0, 0)
+	if ft != fileTypePipe || e != 0 {
+		return false
+	}
+
+	var buf [2 + syscall.MAX_PATH]uint16
+	r, _, e := syscall.Syscall6(procGetFileInformationByHandleEx.Addr(),
+		4, fd, fileNameInfo, uintptr(unsafe.Pointer(&buf)),
+		uintptr(len(buf)*2), 0, 0)
+	if r == 0 || e != 0 {
+		return false
+	}
+
+	l := *(*uint32)(unsafe.Pointer(&buf))
+	return isCygwinPipeName(string(utf16.Decode(buf[2 : 2+l/2])))
+}

go/pkg/mod/github.com/mattn/go-isatty@v0.0.20/isatty_windows_test.go

@@ -0,0 +1,39 @@
+//go:build windows
+// +build windows
+
+package isatty
+
+import (
+	"testing"
+)
+
+func TestCygwinPipeName(t *testing.T) {
+	tests := []struct {
+		name   string
+		result bool
+	}{
+		{``, false},
+		{`\msys-`, false},
+		{`\cygwin-----`, false},
+		{`\msys-x-PTY5-pty1-from-master`, false},
+		{`\cygwin-x-PTY5-from-master`, false},
+		{`\cygwin-x-pty2-from-toaster`, false},
+		{`\cygwin--pty2-from-master`, false},
+		{`\\cygwin-x-pty2-from-master`, false},
+		{`\cygwin-x-pty2-from-master-`, true}, // for the feature
+		{`\cygwin-e022582115c10879-pty4-from-master`, true},
+		{`\msys-e022582115c10879-pty4-to-master`, true},
+		{`\cygwin-e022582115c10879-pty4-to-master`, true},
+		{`\Device\NamedPipe\cygwin-e022582115c10879-pty4-from-master`, true},
+		{`\Device\NamedPipe\msys-e022582115c10879-pty4-to-master`, true},
+		{`Device\NamedPipe\cygwin-e022582115c10879-pty4-to-master`, false},
+	}
+
+	for _, test := range tests {
+		want := test.result
+		got := isCygwinPipeName(test.name)
+		if want != got {
+			t.Fatalf("isatty(%q): got %v, want %v:", test.name, got, want)
+		}
+	}
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: mattn # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/.travis.yml

@@ -0,0 +1,16 @@
+language: go
+sudo: false
+go:
+  - 1.13.x
+  - tip
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go generate
+  - git diff --cached --exit-code
+  - ./go.test.sh
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Yasuhiro Matsumoto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/README.md

@@ -0,0 +1,27 @@
+go-runewidth
+============
+
+[![Build Status](https://travis-ci.org/mattn/go-runewidth.png?branch=master)](https://travis-ci.org/mattn/go-runewidth)
+[![Codecov](https://codecov.io/gh/mattn/go-runewidth/branch/master/graph/badge.svg)](https://codecov.io/gh/mattn/go-runewidth)
+[![GoDoc](https://godoc.org/github.com/mattn/go-runewidth?status.svg)](http://godoc.org/github.com/mattn/go-runewidth)
+[![Go Report Card](https://goreportcard.com/badge/github.com/mattn/go-runewidth)](https://goreportcard.com/report/github.com/mattn/go-runewidth)
+
+Provides functions to get fixed width of the character or string.
+
+Usage
+-----
+
+```go
+runewidth.StringWidth("つのだ☆HIRO") == 12
+```
+
+
+Author
+------
+
+Yasuhiro Matsumoto
+
+License
+-------
+
+under the MIT License: http://mattn.mit-license.org/2013

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/benchmark_test.go

@@ -0,0 +1,117 @@
+package runewidth
+
+import (
+	"testing"
+	"unicode/utf8"
+)
+
+var benchSink int
+
+//
+// RuneWidth
+//
+
+func benchRuneWidth(b *testing.B, eastAsianWidth bool, start, stop rune, want int) int {
+	n := 0
+	got := -1
+	c := NewCondition()
+	c.EastAsianWidth = eastAsianWidth
+	for i := 0; i < b.N; i++ {
+		got = n
+		for r := start; r < stop; r++ {
+			n += c.RuneWidth(r)
+		}
+		got = n - got
+	}
+	if want != 0 && got != want { // some extra checks
+		b.Errorf("got %d, want %d\n", got, want)
+	}
+	return n
+}
+func BenchmarkRuneWidthAll(b *testing.B) {
+	benchSink = benchRuneWidth(b, false, 0, utf8.MaxRune+1, 1293932)
+}
+func BenchmarkRuneWidth768(b *testing.B) {
+	benchSink = benchRuneWidth(b, false, 0, 0x300, 702)
+}
+func BenchmarkRuneWidthAllEastAsian(b *testing.B) {
+	benchSink = benchRuneWidth(b, true, 0, utf8.MaxRune+1, 1432558)
+}
+func BenchmarkRuneWidth768EastAsian(b *testing.B) {
+	benchSink = benchRuneWidth(b, true, 0, 0x300, 794)
+}
+
+//
+// String1Width - strings which consist of a single rune
+//
+
+func benchString1Width(b *testing.B, eastAsianWidth bool, start, stop rune, want int) int {
+	n := 0
+	got := -1
+	c := NewCondition()
+	c.EastAsianWidth = eastAsianWidth
+	for i := 0; i < b.N; i++ {
+		got = n
+		for r := start; r < stop; r++ {
+			s := string(r)
+			n += c.StringWidth(s)
+		}
+		got = n - got
+	}
+	if want != 0 && got != want { // some extra checks
+		b.Errorf("got %d, want %d\n", got, want)
+	}
+	return n
+}
+func BenchmarkString1WidthAll(b *testing.B) {
+	benchSink = benchString1Width(b, false, 0, utf8.MaxRune+1, 1295980)
+}
+func BenchmarkString1Width768(b *testing.B) {
+	benchSink = benchString1Width(b, false, 0, 0x300, 702)
+}
+func BenchmarkString1WidthAllEastAsian(b *testing.B) {
+	benchSink = benchString1Width(b, true, 0, utf8.MaxRune+1, 1436654)
+}
+func BenchmarkString1Width768EastAsian(b *testing.B) {
+	benchSink = benchString1Width(b, true, 0, 0x300, 794)
+}
+
+//
+// tables
+//
+func benchTable(b *testing.B, tbl table) int {
+	n := 0
+	for i := 0; i < b.N; i++ {
+		for r := rune(0); r <= utf8.MaxRune; r++ {
+			if inTable(r, tbl) {
+				n++
+			}
+		}
+	}
+	return n
+}
+
+func BenchmarkTablePrivate(b *testing.B) {
+	benchSink = benchTable(b, private)
+}
+func BenchmarkTableNonprint(b *testing.B) {
+	benchSink = benchTable(b, nonprint)
+}
+func BenchmarkTableCombining(b *testing.B) {
+	benchSink = benchTable(b, combining)
+}
+func BenchmarkTableDoublewidth(b *testing.B) {
+	benchSink = benchTable(b, doublewidth)
+}
+func BenchmarkTableAmbiguous(b *testing.B) {
+	benchSink = benchTable(b, ambiguous)
+}
+func BenchmarkTableEmoji(b *testing.B) {
+	benchSink = benchTable(b, emoji)
+}
+func BenchmarkTableNarrow(b *testing.B) {
+	benchSink = benchTable(b, narrow)
+}
+func BenchmarkTableNeutral(b *testing.B) {
+	benchSink = benchTable(b, neutral)
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/go.mod

@@ -0,0 +1,5 @@
+module github.com/mattn/go-runewidth
+
+go 1.9
+
+require github.com/rivo/uniseg v0.2.0

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/go.sum

@@ -0,0 +1,2 @@
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/go.test.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+echo "" > coverage.txt
+
+for d in $(go list ./... | grep -v vendor); do
+    go test -race -coverprofile=profile.out -covermode=atomic "$d"
+    if [ -f profile.out ]; then
+        cat profile.out >> coverage.txt
+        rm profile.out
+    fi
+done

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth.go

@@ -0,0 +1,273 @@
+package runewidth
+
+import (
+	"os"
+
+	"github.com/rivo/uniseg"
+)
+
+//go:generate go run script/generate.go
+
+var (
+	// EastAsianWidth will be set true if the current locale is CJK
+	EastAsianWidth bool
+
+	// StrictEmojiNeutral should be set false if handle broken fonts
+	StrictEmojiNeutral bool = true
+
+	// DefaultCondition is a condition in current locale
+	DefaultCondition = &Condition{
+		EastAsianWidth:     false,
+		StrictEmojiNeutral: true,
+	}
+)
+
+func init() {
+	handleEnv()
+}
+
+func handleEnv() {
+	env := os.Getenv("RUNEWIDTH_EASTASIAN")
+	if env == "" {
+		EastAsianWidth = IsEastAsian()
+	} else {
+		EastAsianWidth = env == "1"
+	}
+	// update DefaultCondition
+	DefaultCondition.EastAsianWidth = EastAsianWidth
+}
+
+type interval struct {
+	first rune
+	last  rune
+}
+
+type table []interval
+
+func inTables(r rune, ts ...table) bool {
+	for _, t := range ts {
+		if inTable(r, t) {
+			return true
+		}
+	}
+	return false
+}
+
+func inTable(r rune, t table) bool {
+	if r < t[0].first {
+		return false
+	}
+
+	bot := 0
+	top := len(t) - 1
+	for top >= bot {
+		mid := (bot + top) >> 1
+
+		switch {
+		case t[mid].last < r:
+			bot = mid + 1
+		case t[mid].first > r:
+			top = mid - 1
+		default:
+			return true
+		}
+	}
+
+	return false
+}
+
+var private = table{
+	{0x00E000, 0x00F8FF}, {0x0F0000, 0x0FFFFD}, {0x100000, 0x10FFFD},
+}
+
+var nonprint = table{
+	{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
+	{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
+	{0x2028, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
+	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
+}
+
+// Condition have flag EastAsianWidth whether the current locale is CJK or not.
+type Condition struct {
+	EastAsianWidth     bool
+	StrictEmojiNeutral bool
+}
+
+// NewCondition return new instance of Condition which is current locale.
+func NewCondition() *Condition {
+	return &Condition{
+		EastAsianWidth:     EastAsianWidth,
+		StrictEmojiNeutral: StrictEmojiNeutral,
+	}
+}
+
+// RuneWidth returns the number of cells in r.
+// See http://www.unicode.org/reports/tr11/
+func (c *Condition) RuneWidth(r rune) int {
+	// optimized version, verified by TestRuneWidthChecksums()
+	if !c.EastAsianWidth {
+		switch {
+		case r < 0x20 || r > 0x10FFFF:
+			return 0
+		case (r >= 0x7F && r <= 0x9F) || r == 0xAD: // nonprint
+			return 0
+		case r < 0x300:
+			return 1
+		case inTable(r, narrow):
+			return 1
+		case inTables(r, nonprint, combining):
+			return 0
+		case inTable(r, doublewidth):
+			return 2
+		default:
+			return 1
+		}
+	} else {
+		switch {
+		case r < 0 || r > 0x10FFFF || inTables(r, nonprint, combining):
+			return 0
+		case inTable(r, narrow):
+			return 1
+		case inTables(r, ambiguous, doublewidth):
+			return 2
+		case !c.StrictEmojiNeutral && inTables(r, ambiguous, emoji, narrow):
+			return 2
+		default:
+			return 1
+		}
+	}
+}
+
+// StringWidth return width as you can see
+func (c *Condition) StringWidth(s string) (width int) {
+	g := uniseg.NewGraphemes(s)
+	for g.Next() {
+		var chWidth int
+		for _, r := range g.Runes() {
+			chWidth = c.RuneWidth(r)
+			if chWidth > 0 {
+				break // Our best guess at this point is to use the width of the first non-zero-width rune.
+			}
+		}
+		width += chWidth
+	}
+	return
+}
+
+// Truncate return string truncated with w cells
+func (c *Condition) Truncate(s string, w int, tail string) string {
+	if c.StringWidth(s) <= w {
+		return s
+	}
+	w -= c.StringWidth(tail)
+	var width int
+	pos := len(s)
+	g := uniseg.NewGraphemes(s)
+	for g.Next() {
+		var chWidth int
+		for _, r := range g.Runes() {
+			chWidth = c.RuneWidth(r)
+			if chWidth > 0 {
+				break // See StringWidth() for details.
+			}
+		}
+		if width+chWidth > w {
+			pos, _ = g.Positions()
+			break
+		}
+		width += chWidth
+	}
+	return s[:pos] + tail
+}
+
+// Wrap return string wrapped with w cells
+func (c *Condition) Wrap(s string, w int) string {
+	width := 0
+	out := ""
+	for _, r := range []rune(s) {
+		cw := c.RuneWidth(r)
+		if r == '\n' {
+			out += string(r)
+			width = 0
+			continue
+		} else if width+cw > w {
+			out += "\n"
+			width = 0
+			out += string(r)
+			width += cw
+			continue
+		}
+		out += string(r)
+		width += cw
+	}
+	return out
+}
+
+// FillLeft return string filled in left by spaces in w cells
+func (c *Condition) FillLeft(s string, w int) string {
+	width := c.StringWidth(s)
+	count := w - width
+	if count > 0 {
+		b := make([]byte, count)
+		for i := range b {
+			b[i] = ' '
+		}
+		return string(b) + s
+	}
+	return s
+}
+
+// FillRight return string filled in left by spaces in w cells
+func (c *Condition) FillRight(s string, w int) string {
+	width := c.StringWidth(s)
+	count := w - width
+	if count > 0 {
+		b := make([]byte, count)
+		for i := range b {
+			b[i] = ' '
+		}
+		return s + string(b)
+	}
+	return s
+}
+
+// RuneWidth returns the number of cells in r.
+// See http://www.unicode.org/reports/tr11/
+func RuneWidth(r rune) int {
+	return DefaultCondition.RuneWidth(r)
+}
+
+// IsAmbiguousWidth returns whether is ambiguous width or not.
+func IsAmbiguousWidth(r rune) bool {
+	return inTables(r, private, ambiguous)
+}
+
+// IsNeutralWidth returns whether is neutral width or not.
+func IsNeutralWidth(r rune) bool {
+	return inTable(r, neutral)
+}
+
+// StringWidth return width as you can see
+func StringWidth(s string) (width int) {
+	return DefaultCondition.StringWidth(s)
+}
+
+// Truncate return string truncated with w cells
+func Truncate(s string, w int, tail string) string {
+	return DefaultCondition.Truncate(s, w, tail)
+}
+
+// Wrap return string wrapped with w cells
+func Wrap(s string, w int) string {
+	return DefaultCondition.Wrap(s, w)
+}
+
+// FillLeft return string filled in left by spaces in w cells
+func FillLeft(s string, w int) string {
+	return DefaultCondition.FillLeft(s, w)
+}
+
+// FillRight return string filled in left by spaces in w cells
+func FillRight(s string, w int) string {
+	return DefaultCondition.FillRight(s, w)
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_appengine.go

@@ -0,0 +1,8 @@
+// +build appengine
+
+package runewidth
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	return false
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_js.go

@@ -0,0 +1,9 @@
+// +build js
+// +build !appengine
+
+package runewidth
+
+func IsEastAsian() bool {
+	// TODO: Implement this for the web. Detect east asian in a compatible way, and return true.
+	return false
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_posix.go

@@ -0,0 +1,82 @@
+// +build !windows
+// +build !js
+// +build !appengine
+
+package runewidth
+
+import (
+	"os"
+	"regexp"
+	"strings"
+)
+
+var reLoc = regexp.MustCompile(`^[a-z][a-z][a-z]?(?:_[A-Z][A-Z])?\.(.+)`)
+
+var mblenTable = map[string]int{
+	"utf-8":   6,
+	"utf8":    6,
+	"jis":     8,
+	"eucjp":   3,
+	"euckr":   2,
+	"euccn":   2,
+	"sjis":    2,
+	"cp932":   2,
+	"cp51932": 2,
+	"cp936":   2,
+	"cp949":   2,
+	"cp950":   2,
+	"big5":    2,
+	"gbk":     2,
+	"gb2312":  2,
+}
+
+func isEastAsian(locale string) bool {
+	charset := strings.ToLower(locale)
+	r := reLoc.FindStringSubmatch(locale)
+	if len(r) == 2 {
+		charset = strings.ToLower(r[1])
+	}
+
+	if strings.HasSuffix(charset, "@cjk_narrow") {
+		return false
+	}
+
+	for pos, b := range []byte(charset) {
+		if b == '@' {
+			charset = charset[:pos]
+			break
+		}
+	}
+	max := 1
+	if m, ok := mblenTable[charset]; ok {
+		max = m
+	}
+	if max > 1 && (charset[0] != 'u' ||
+		strings.HasPrefix(locale, "ja") ||
+		strings.HasPrefix(locale, "ko") ||
+		strings.HasPrefix(locale, "zh")) {
+		return true
+	}
+	return false
+}
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	locale := os.Getenv("LC_ALL")
+	if locale == "" {
+		locale = os.Getenv("LC_CTYPE")
+	}
+	if locale == "" {
+		locale = os.Getenv("LANG")
+	}
+
+	// ignore C locale
+	if locale == "POSIX" || locale == "C" {
+		return false
+	}
+	if len(locale) > 1 && locale[0] == 'C' && (locale[1] == '.' || locale[1] == '-') {
+		return false
+	}
+
+	return isEastAsian(locale)
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_posix_test.go

@@ -0,0 +1,98 @@
+// +build !windows
+// +build !js
+// +build !appengine
+
+package runewidth
+
+import (
+	"os"
+	"testing"
+)
+
+type envVars struct {
+	lang     string
+	lc_all   string
+	lc_ctype string
+}
+
+func saveEnv() envVars {
+	return envVars{
+		lang:     os.Getenv("LANG"),
+		lc_all:   os.Getenv("LC_ALL"),
+		lc_ctype: os.Getenv("LC_CTYPE"),
+	}
+}
+func restoreEnv(env *envVars) {
+	os.Setenv("LANG", env.lang)
+	os.Setenv("LC_ALL", env.lc_all)
+	os.Setenv("LC_CTYPE", env.lc_ctype)
+}
+
+func TestIsEastAsian(t *testing.T) {
+	testcases := []struct {
+		locale string
+		want   bool
+	}{
+		{"foo@cjk_narrow", false},
+		{"foo@cjk", false},
+		{"utf-8@cjk", false},
+		{"ja_JP.CP932", true},
+	}
+
+	for _, tt := range testcases {
+		got := isEastAsian(tt.locale)
+		if got != tt.want {
+			t.Fatalf("isEastAsian(%q) should be %v", tt.locale, tt.want)
+		}
+	}
+}
+
+func TestIsEastAsianLCCTYPE(t *testing.T) {
+	env := saveEnv()
+	defer restoreEnv(&env)
+	os.Setenv("LC_ALL", "")
+
+	testcases := []struct {
+		lcctype string
+		want    bool
+	}{
+		{"ja_JP.UTF-8", true},
+		{"C", false},
+		{"POSIX", false},
+		{"en_US.UTF-8", false},
+	}
+
+	for _, tt := range testcases {
+		os.Setenv("LC_CTYPE", tt.lcctype)
+		got := IsEastAsian()
+		if got != tt.want {
+			t.Fatalf("IsEastAsian() for LC_CTYPE=%v should be %v", tt.lcctype, tt.want)
+		}
+	}
+}
+
+func TestIsEastAsianLANG(t *testing.T) {
+	env := saveEnv()
+	defer restoreEnv(&env)
+	os.Setenv("LC_ALL", "")
+	os.Setenv("LC_CTYPE", "")
+
+	testcases := []struct {
+		lcctype string
+		want    bool
+	}{
+		{"ja_JP.UTF-8", true},
+		{"C", false},
+		{"POSIX", false},
+		{"en_US.UTF-8", false},
+		{"C.UTF-8", false},
+	}
+
+	for _, tt := range testcases {
+		os.Setenv("LANG", tt.lcctype)
+		got := IsEastAsian()
+		if got != tt.want {
+			t.Fatalf("IsEastAsian() for LANG=%v should be %v", tt.lcctype, tt.want)
+		}
+	}
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_table.go

@@ -0,0 +1,439 @@
+// Code generated by script/generate.go. DO NOT EDIT.
+
+package runewidth
+
+var combining = table{
+	{0x0300, 0x036F}, {0x0483, 0x0489}, {0x07EB, 0x07F3},
+	{0x0C00, 0x0C00}, {0x0C04, 0x0C04}, {0x0D00, 0x0D01},
+	{0x135D, 0x135F}, {0x1A7F, 0x1A7F}, {0x1AB0, 0x1AC0},
+	{0x1B6B, 0x1B73}, {0x1DC0, 0x1DF9}, {0x1DFB, 0x1DFF},
+	{0x20D0, 0x20F0}, {0x2CEF, 0x2CF1}, {0x2DE0, 0x2DFF},
+	{0x3099, 0x309A}, {0xA66F, 0xA672}, {0xA674, 0xA67D},
+	{0xA69E, 0xA69F}, {0xA6F0, 0xA6F1}, {0xA8E0, 0xA8F1},
+	{0xFE20, 0xFE2F}, {0x101FD, 0x101FD}, {0x10376, 0x1037A},
+	{0x10EAB, 0x10EAC}, {0x10F46, 0x10F50}, {0x11300, 0x11301},
+	{0x1133B, 0x1133C}, {0x11366, 0x1136C}, {0x11370, 0x11374},
+	{0x16AF0, 0x16AF4}, {0x1D165, 0x1D169}, {0x1D16D, 0x1D172},
+	{0x1D17B, 0x1D182}, {0x1D185, 0x1D18B}, {0x1D1AA, 0x1D1AD},
+	{0x1D242, 0x1D244}, {0x1E000, 0x1E006}, {0x1E008, 0x1E018},
+	{0x1E01B, 0x1E021}, {0x1E023, 0x1E024}, {0x1E026, 0x1E02A},
+	{0x1E8D0, 0x1E8D6},
+}
+
+var doublewidth = table{
+	{0x1100, 0x115F}, {0x231A, 0x231B}, {0x2329, 0x232A},
+	{0x23E9, 0x23EC}, {0x23F0, 0x23F0}, {0x23F3, 0x23F3},
+	{0x25FD, 0x25FE}, {0x2614, 0x2615}, {0x2648, 0x2653},
+	{0x267F, 0x267F}, {0x2693, 0x2693}, {0x26A1, 0x26A1},
+	{0x26AA, 0x26AB}, {0x26BD, 0x26BE}, {0x26C4, 0x26C5},
+	{0x26CE, 0x26CE}, {0x26D4, 0x26D4}, {0x26EA, 0x26EA},
+	{0x26F2, 0x26F3}, {0x26F5, 0x26F5}, {0x26FA, 0x26FA},
+	{0x26FD, 0x26FD}, {0x2705, 0x2705}, {0x270A, 0x270B},
+	{0x2728, 0x2728}, {0x274C, 0x274C}, {0x274E, 0x274E},
+	{0x2753, 0x2755}, {0x2757, 0x2757}, {0x2795, 0x2797},
+	{0x27B0, 0x27B0}, {0x27BF, 0x27BF}, {0x2B1B, 0x2B1C},
+	{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x2E80, 0x2E99},
+	{0x2E9B, 0x2EF3}, {0x2F00, 0x2FD5}, {0x2FF0, 0x2FFB},
+	{0x3000, 0x303E}, {0x3041, 0x3096}, {0x3099, 0x30FF},
+	{0x3105, 0x312F}, {0x3131, 0x318E}, {0x3190, 0x31E3},
+	{0x31F0, 0x321E}, {0x3220, 0x3247}, {0x3250, 0x4DBF},
+	{0x4E00, 0xA48C}, {0xA490, 0xA4C6}, {0xA960, 0xA97C},
+	{0xAC00, 0xD7A3}, {0xF900, 0xFAFF}, {0xFE10, 0xFE19},
+	{0xFE30, 0xFE52}, {0xFE54, 0xFE66}, {0xFE68, 0xFE6B},
+	{0xFF01, 0xFF60}, {0xFFE0, 0xFFE6}, {0x16FE0, 0x16FE4},
+	{0x16FF0, 0x16FF1}, {0x17000, 0x187F7}, {0x18800, 0x18CD5},
+	{0x18D00, 0x18D08}, {0x1B000, 0x1B11E}, {0x1B150, 0x1B152},
+	{0x1B164, 0x1B167}, {0x1B170, 0x1B2FB}, {0x1F004, 0x1F004},
+	{0x1F0CF, 0x1F0CF}, {0x1F18E, 0x1F18E}, {0x1F191, 0x1F19A},
+	{0x1F200, 0x1F202}, {0x1F210, 0x1F23B}, {0x1F240, 0x1F248},
+	{0x1F250, 0x1F251}, {0x1F260, 0x1F265}, {0x1F300, 0x1F320},
+	{0x1F32D, 0x1F335}, {0x1F337, 0x1F37C}, {0x1F37E, 0x1F393},
+	{0x1F3A0, 0x1F3CA}, {0x1F3CF, 0x1F3D3}, {0x1F3E0, 0x1F3F0},
+	{0x1F3F4, 0x1F3F4}, {0x1F3F8, 0x1F43E}, {0x1F440, 0x1F440},
+	{0x1F442, 0x1F4FC}, {0x1F4FF, 0x1F53D}, {0x1F54B, 0x1F54E},
+	{0x1F550, 0x1F567}, {0x1F57A, 0x1F57A}, {0x1F595, 0x1F596},
+	{0x1F5A4, 0x1F5A4}, {0x1F5FB, 0x1F64F}, {0x1F680, 0x1F6C5},
+	{0x1F6CC, 0x1F6CC}, {0x1F6D0, 0x1F6D2}, {0x1F6D5, 0x1F6D7},
+	{0x1F6EB, 0x1F6EC}, {0x1F6F4, 0x1F6FC}, {0x1F7E0, 0x1F7EB},
+	{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1F978},
+	{0x1F97A, 0x1F9CB}, {0x1F9CD, 0x1F9FF}, {0x1FA70, 0x1FA74},
+	{0x1FA78, 0x1FA7A}, {0x1FA80, 0x1FA86}, {0x1FA90, 0x1FAA8},
+	{0x1FAB0, 0x1FAB6}, {0x1FAC0, 0x1FAC2}, {0x1FAD0, 0x1FAD6},
+	{0x20000, 0x2FFFD}, {0x30000, 0x3FFFD},
+}
+
+var ambiguous = table{
+	{0x00A1, 0x00A1}, {0x00A4, 0x00A4}, {0x00A7, 0x00A8},
+	{0x00AA, 0x00AA}, {0x00AD, 0x00AE}, {0x00B0, 0x00B4},
+	{0x00B6, 0x00BA}, {0x00BC, 0x00BF}, {0x00C6, 0x00C6},
+	{0x00D0, 0x00D0}, {0x00D7, 0x00D8}, {0x00DE, 0x00E1},
+	{0x00E6, 0x00E6}, {0x00E8, 0x00EA}, {0x00EC, 0x00ED},
+	{0x00F0, 0x00F0}, {0x00F2, 0x00F3}, {0x00F7, 0x00FA},
+	{0x00FC, 0x00FC}, {0x00FE, 0x00FE}, {0x0101, 0x0101},
+	{0x0111, 0x0111}, {0x0113, 0x0113}, {0x011B, 0x011B},
+	{0x0126, 0x0127}, {0x012B, 0x012B}, {0x0131, 0x0133},
+	{0x0138, 0x0138}, {0x013F, 0x0142}, {0x0144, 0x0144},
+	{0x0148, 0x014B}, {0x014D, 0x014D}, {0x0152, 0x0153},
+	{0x0166, 0x0167}, {0x016B, 0x016B}, {0x01CE, 0x01CE},
+	{0x01D0, 0x01D0}, {0x01D2, 0x01D2}, {0x01D4, 0x01D4},
+	{0x01D6, 0x01D6}, {0x01D8, 0x01D8}, {0x01DA, 0x01DA},
+	{0x01DC, 0x01DC}, {0x0251, 0x0251}, {0x0261, 0x0261},
+	{0x02C4, 0x02C4}, {0x02C7, 0x02C7}, {0x02C9, 0x02CB},
+	{0x02CD, 0x02CD}, {0x02D0, 0x02D0}, {0x02D8, 0x02DB},
+	{0x02DD, 0x02DD}, {0x02DF, 0x02DF}, {0x0300, 0x036F},
+	{0x0391, 0x03A1}, {0x03A3, 0x03A9}, {0x03B1, 0x03C1},
+	{0x03C3, 0x03C9}, {0x0401, 0x0401}, {0x0410, 0x044F},
+	{0x0451, 0x0451}, {0x2010, 0x2010}, {0x2013, 0x2016},
+	{0x2018, 0x2019}, {0x201C, 0x201D}, {0x2020, 0x2022},
+	{0x2024, 0x2027}, {0x2030, 0x2030}, {0x2032, 0x2033},
+	{0x2035, 0x2035}, {0x203B, 0x203B}, {0x203E, 0x203E},
+	{0x2074, 0x2074}, {0x207F, 0x207F}, {0x2081, 0x2084},
+	{0x20AC, 0x20AC}, {0x2103, 0x2103}, {0x2105, 0x2105},
+	{0x2109, 0x2109}, {0x2113, 0x2113}, {0x2116, 0x2116},
+	{0x2121, 0x2122}, {0x2126, 0x2126}, {0x212B, 0x212B},
+	{0x2153, 0x2154}, {0x215B, 0x215E}, {0x2160, 0x216B},
+	{0x2170, 0x2179}, {0x2189, 0x2189}, {0x2190, 0x2199},
+	{0x21B8, 0x21B9}, {0x21D2, 0x21D2}, {0x21D4, 0x21D4},
+	{0x21E7, 0x21E7}, {0x2200, 0x2200}, {0x2202, 0x2203},
+	{0x2207, 0x2208}, {0x220B, 0x220B}, {0x220F, 0x220F},
+	{0x2211, 0x2211}, {0x2215, 0x2215}, {0x221A, 0x221A},
+	{0x221D, 0x2220}, {0x2223, 0x2223}, {0x2225, 0x2225},
+	{0x2227, 0x222C}, {0x222E, 0x222E}, {0x2234, 0x2237},
+	{0x223C, 0x223D}, {0x2248, 0x2248}, {0x224C, 0x224C},
+	{0x2252, 0x2252}, {0x2260, 0x2261}, {0x2264, 0x2267},
+	{0x226A, 0x226B}, {0x226E, 0x226F}, {0x2282, 0x2283},
+	{0x2286, 0x2287}, {0x2295, 0x2295}, {0x2299, 0x2299},
+	{0x22A5, 0x22A5}, {0x22BF, 0x22BF}, {0x2312, 0x2312},
+	{0x2460, 0x24E9}, {0x24EB, 0x254B}, {0x2550, 0x2573},
+	{0x2580, 0x258F}, {0x2592, 0x2595}, {0x25A0, 0x25A1},
+	{0x25A3, 0x25A9}, {0x25B2, 0x25B3}, {0x25B6, 0x25B7},
+	{0x25BC, 0x25BD}, {0x25C0, 0x25C1}, {0x25C6, 0x25C8},
+	{0x25CB, 0x25CB}, {0x25CE, 0x25D1}, {0x25E2, 0x25E5},
+	{0x25EF, 0x25EF}, {0x2605, 0x2606}, {0x2609, 0x2609},
+	{0x260E, 0x260F}, {0x261C, 0x261C}, {0x261E, 0x261E},
+	{0x2640, 0x2640}, {0x2642, 0x2642}, {0x2660, 0x2661},
+	{0x2663, 0x2665}, {0x2667, 0x266A}, {0x266C, 0x266D},
+	{0x266F, 0x266F}, {0x269E, 0x269F}, {0x26BF, 0x26BF},
+	{0x26C6, 0x26CD}, {0x26CF, 0x26D3}, {0x26D5, 0x26E1},
+	{0x26E3, 0x26E3}, {0x26E8, 0x26E9}, {0x26EB, 0x26F1},
+	{0x26F4, 0x26F4}, {0x26F6, 0x26F9}, {0x26FB, 0x26FC},
+	{0x26FE, 0x26FF}, {0x273D, 0x273D}, {0x2776, 0x277F},
+	{0x2B56, 0x2B59}, {0x3248, 0x324F}, {0xE000, 0xF8FF},
+	{0xFE00, 0xFE0F}, {0xFFFD, 0xFFFD}, {0x1F100, 0x1F10A},
+	{0x1F110, 0x1F12D}, {0x1F130, 0x1F169}, {0x1F170, 0x1F18D},
+	{0x1F18F, 0x1F190}, {0x1F19B, 0x1F1AC}, {0xE0100, 0xE01EF},
+	{0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD},
+}
+var narrow = table{
+	{0x0020, 0x007E}, {0x00A2, 0x00A3}, {0x00A5, 0x00A6},
+	{0x00AC, 0x00AC}, {0x00AF, 0x00AF}, {0x27E6, 0x27ED},
+	{0x2985, 0x2986},
+}
+
+var neutral = table{
+	{0x0000, 0x001F}, {0x007F, 0x00A0}, {0x00A9, 0x00A9},
+	{0x00AB, 0x00AB}, {0x00B5, 0x00B5}, {0x00BB, 0x00BB},
+	{0x00C0, 0x00C5}, {0x00C7, 0x00CF}, {0x00D1, 0x00D6},
+	{0x00D9, 0x00DD}, {0x00E2, 0x00E5}, {0x00E7, 0x00E7},
+	{0x00EB, 0x00EB}, {0x00EE, 0x00EF}, {0x00F1, 0x00F1},
+	{0x00F4, 0x00F6}, {0x00FB, 0x00FB}, {0x00FD, 0x00FD},
+	{0x00FF, 0x0100}, {0x0102, 0x0110}, {0x0112, 0x0112},
+	{0x0114, 0x011A}, {0x011C, 0x0125}, {0x0128, 0x012A},
+	{0x012C, 0x0130}, {0x0134, 0x0137}, {0x0139, 0x013E},
+	{0x0143, 0x0143}, {0x0145, 0x0147}, {0x014C, 0x014C},
+	{0x014E, 0x0151}, {0x0154, 0x0165}, {0x0168, 0x016A},
+	{0x016C, 0x01CD}, {0x01CF, 0x01CF}, {0x01D1, 0x01D1},
+	{0x01D3, 0x01D3}, {0x01D5, 0x01D5}, {0x01D7, 0x01D7},
+	{0x01D9, 0x01D9}, {0x01DB, 0x01DB}, {0x01DD, 0x0250},
+	{0x0252, 0x0260}, {0x0262, 0x02C3}, {0x02C5, 0x02C6},
+	{0x02C8, 0x02C8}, {0x02CC, 0x02CC}, {0x02CE, 0x02CF},
+	{0x02D1, 0x02D7}, {0x02DC, 0x02DC}, {0x02DE, 0x02DE},
+	{0x02E0, 0x02FF}, {0x0370, 0x0377}, {0x037A, 0x037F},
+	{0x0384, 0x038A}, {0x038C, 0x038C}, {0x038E, 0x0390},
+	{0x03AA, 0x03B0}, {0x03C2, 0x03C2}, {0x03CA, 0x0400},
+	{0x0402, 0x040F}, {0x0450, 0x0450}, {0x0452, 0x052F},
+	{0x0531, 0x0556}, {0x0559, 0x058A}, {0x058D, 0x058F},
+	{0x0591, 0x05C7}, {0x05D0, 0x05EA}, {0x05EF, 0x05F4},
+	{0x0600, 0x061C}, {0x061E, 0x070D}, {0x070F, 0x074A},
+	{0x074D, 0x07B1}, {0x07C0, 0x07FA}, {0x07FD, 0x082D},
+	{0x0830, 0x083E}, {0x0840, 0x085B}, {0x085E, 0x085E},
+	{0x0860, 0x086A}, {0x08A0, 0x08B4}, {0x08B6, 0x08C7},
+	{0x08D3, 0x0983}, {0x0985, 0x098C}, {0x098F, 0x0990},
+	{0x0993, 0x09A8}, {0x09AA, 0x09B0}, {0x09B2, 0x09B2},
+	{0x09B6, 0x09B9}, {0x09BC, 0x09C4}, {0x09C7, 0x09C8},
+	{0x09CB, 0x09CE}, {0x09D7, 0x09D7}, {0x09DC, 0x09DD},
+	{0x09DF, 0x09E3}, {0x09E6, 0x09FE}, {0x0A01, 0x0A03},
+	{0x0A05, 0x0A0A}, {0x0A0F, 0x0A10}, {0x0A13, 0x0A28},
+	{0x0A2A, 0x0A30}, {0x0A32, 0x0A33}, {0x0A35, 0x0A36},
+	{0x0A38, 0x0A39}, {0x0A3C, 0x0A3C}, {0x0A3E, 0x0A42},
+	{0x0A47, 0x0A48}, {0x0A4B, 0x0A4D}, {0x0A51, 0x0A51},
+	{0x0A59, 0x0A5C}, {0x0A5E, 0x0A5E}, {0x0A66, 0x0A76},
+	{0x0A81, 0x0A83}, {0x0A85, 0x0A8D}, {0x0A8F, 0x0A91},
+	{0x0A93, 0x0AA8}, {0x0AAA, 0x0AB0}, {0x0AB2, 0x0AB3},
+	{0x0AB5, 0x0AB9}, {0x0ABC, 0x0AC5}, {0x0AC7, 0x0AC9},
+	{0x0ACB, 0x0ACD}, {0x0AD0, 0x0AD0}, {0x0AE0, 0x0AE3},
+	{0x0AE6, 0x0AF1}, {0x0AF9, 0x0AFF}, {0x0B01, 0x0B03},
+	{0x0B05, 0x0B0C}, {0x0B0F, 0x0B10}, {0x0B13, 0x0B28},
+	{0x0B2A, 0x0B30}, {0x0B32, 0x0B33}, {0x0B35, 0x0B39},
+	{0x0B3C, 0x0B44}, {0x0B47, 0x0B48}, {0x0B4B, 0x0B4D},
+	{0x0B55, 0x0B57}, {0x0B5C, 0x0B5D}, {0x0B5F, 0x0B63},
+	{0x0B66, 0x0B77}, {0x0B82, 0x0B83}, {0x0B85, 0x0B8A},
+	{0x0B8E, 0x0B90}, {0x0B92, 0x0B95}, {0x0B99, 0x0B9A},
+	{0x0B9C, 0x0B9C}, {0x0B9E, 0x0B9F}, {0x0BA3, 0x0BA4},
+	{0x0BA8, 0x0BAA}, {0x0BAE, 0x0BB9}, {0x0BBE, 0x0BC2},
+	{0x0BC6, 0x0BC8}, {0x0BCA, 0x0BCD}, {0x0BD0, 0x0BD0},
+	{0x0BD7, 0x0BD7}, {0x0BE6, 0x0BFA}, {0x0C00, 0x0C0C},
+	{0x0C0E, 0x0C10}, {0x0C12, 0x0C28}, {0x0C2A, 0x0C39},
+	{0x0C3D, 0x0C44}, {0x0C46, 0x0C48}, {0x0C4A, 0x0C4D},
+	{0x0C55, 0x0C56}, {0x0C58, 0x0C5A}, {0x0C60, 0x0C63},
+	{0x0C66, 0x0C6F}, {0x0C77, 0x0C8C}, {0x0C8E, 0x0C90},
+	{0x0C92, 0x0CA8}, {0x0CAA, 0x0CB3}, {0x0CB5, 0x0CB9},
+	{0x0CBC, 0x0CC4}, {0x0CC6, 0x0CC8}, {0x0CCA, 0x0CCD},
+	{0x0CD5, 0x0CD6}, {0x0CDE, 0x0CDE}, {0x0CE0, 0x0CE3},
+	{0x0CE6, 0x0CEF}, {0x0CF1, 0x0CF2}, {0x0D00, 0x0D0C},
+	{0x0D0E, 0x0D10}, {0x0D12, 0x0D44}, {0x0D46, 0x0D48},
+	{0x0D4A, 0x0D4F}, {0x0D54, 0x0D63}, {0x0D66, 0x0D7F},
+	{0x0D81, 0x0D83}, {0x0D85, 0x0D96}, {0x0D9A, 0x0DB1},
+	{0x0DB3, 0x0DBB}, {0x0DBD, 0x0DBD}, {0x0DC0, 0x0DC6},
+	{0x0DCA, 0x0DCA}, {0x0DCF, 0x0DD4}, {0x0DD6, 0x0DD6},
+	{0x0DD8, 0x0DDF}, {0x0DE6, 0x0DEF}, {0x0DF2, 0x0DF4},
+	{0x0E01, 0x0E3A}, {0x0E3F, 0x0E5B}, {0x0E81, 0x0E82},
+	{0x0E84, 0x0E84}, {0x0E86, 0x0E8A}, {0x0E8C, 0x0EA3},
+	{0x0EA5, 0x0EA5}, {0x0EA7, 0x0EBD}, {0x0EC0, 0x0EC4},
+	{0x0EC6, 0x0EC6}, {0x0EC8, 0x0ECD}, {0x0ED0, 0x0ED9},
+	{0x0EDC, 0x0EDF}, {0x0F00, 0x0F47}, {0x0F49, 0x0F6C},
+	{0x0F71, 0x0F97}, {0x0F99, 0x0FBC}, {0x0FBE, 0x0FCC},
+	{0x0FCE, 0x0FDA}, {0x1000, 0x10C5}, {0x10C7, 0x10C7},
+	{0x10CD, 0x10CD}, {0x10D0, 0x10FF}, {0x1160, 0x1248},
+	{0x124A, 0x124D}, {0x1250, 0x1256}, {0x1258, 0x1258},
+	{0x125A, 0x125D}, {0x1260, 0x1288}, {0x128A, 0x128D},
+	{0x1290, 0x12B0}, {0x12B2, 0x12B5}, {0x12B8, 0x12BE},
+	{0x12C0, 0x12C0}, {0x12C2, 0x12C5}, {0x12C8, 0x12D6},
+	{0x12D8, 0x1310}, {0x1312, 0x1315}, {0x1318, 0x135A},
+	{0x135D, 0x137C}, {0x1380, 0x1399}, {0x13A0, 0x13F5},
+	{0x13F8, 0x13FD}, {0x1400, 0x169C}, {0x16A0, 0x16F8},
+	{0x1700, 0x170C}, {0x170E, 0x1714}, {0x1720, 0x1736},
+	{0x1740, 0x1753}, {0x1760, 0x176C}, {0x176E, 0x1770},
+	{0x1772, 0x1773}, {0x1780, 0x17DD}, {0x17E0, 0x17E9},
+	{0x17F0, 0x17F9}, {0x1800, 0x180E}, {0x1810, 0x1819},
+	{0x1820, 0x1878}, {0x1880, 0x18AA}, {0x18B0, 0x18F5},
+	{0x1900, 0x191E}, {0x1920, 0x192B}, {0x1930, 0x193B},
+	{0x1940, 0x1940}, {0x1944, 0x196D}, {0x1970, 0x1974},
+	{0x1980, 0x19AB}, {0x19B0, 0x19C9}, {0x19D0, 0x19DA},
+	{0x19DE, 0x1A1B}, {0x1A1E, 0x1A5E}, {0x1A60, 0x1A7C},
+	{0x1A7F, 0x1A89}, {0x1A90, 0x1A99}, {0x1AA0, 0x1AAD},
+	{0x1AB0, 0x1AC0}, {0x1B00, 0x1B4B}, {0x1B50, 0x1B7C},
+	{0x1B80, 0x1BF3}, {0x1BFC, 0x1C37}, {0x1C3B, 0x1C49},
+	{0x1C4D, 0x1C88}, {0x1C90, 0x1CBA}, {0x1CBD, 0x1CC7},
+	{0x1CD0, 0x1CFA}, {0x1D00, 0x1DF9}, {0x1DFB, 0x1F15},
+	{0x1F18, 0x1F1D}, {0x1F20, 0x1F45}, {0x1F48, 0x1F4D},
+	{0x1F50, 0x1F57}, {0x1F59, 0x1F59}, {0x1F5B, 0x1F5B},
+	{0x1F5D, 0x1F5D}, {0x1F5F, 0x1F7D}, {0x1F80, 0x1FB4},
+	{0x1FB6, 0x1FC4}, {0x1FC6, 0x1FD3}, {0x1FD6, 0x1FDB},
+	{0x1FDD, 0x1FEF}, {0x1FF2, 0x1FF4}, {0x1FF6, 0x1FFE},
+	{0x2000, 0x200F}, {0x2011, 0x2012}, {0x2017, 0x2017},
+	{0x201A, 0x201B}, {0x201E, 0x201F}, {0x2023, 0x2023},
+	{0x2028, 0x202F}, {0x2031, 0x2031}, {0x2034, 0x2034},
+	{0x2036, 0x203A}, {0x203C, 0x203D}, {0x203F, 0x2064},
+	{0x2066, 0x2071}, {0x2075, 0x207E}, {0x2080, 0x2080},
+	{0x2085, 0x208E}, {0x2090, 0x209C}, {0x20A0, 0x20A8},
+	{0x20AA, 0x20AB}, {0x20AD, 0x20BF}, {0x20D0, 0x20F0},
+	{0x2100, 0x2102}, {0x2104, 0x2104}, {0x2106, 0x2108},
+	{0x210A, 0x2112}, {0x2114, 0x2115}, {0x2117, 0x2120},
+	{0x2123, 0x2125}, {0x2127, 0x212A}, {0x212C, 0x2152},
+	{0x2155, 0x215A}, {0x215F, 0x215F}, {0x216C, 0x216F},
+	{0x217A, 0x2188}, {0x218A, 0x218B}, {0x219A, 0x21B7},
+	{0x21BA, 0x21D1}, {0x21D3, 0x21D3}, {0x21D5, 0x21E6},
+	{0x21E8, 0x21FF}, {0x2201, 0x2201}, {0x2204, 0x2206},
+	{0x2209, 0x220A}, {0x220C, 0x220E}, {0x2210, 0x2210},
+	{0x2212, 0x2214}, {0x2216, 0x2219}, {0x221B, 0x221C},
+	{0x2221, 0x2222}, {0x2224, 0x2224}, {0x2226, 0x2226},
+	{0x222D, 0x222D}, {0x222F, 0x2233}, {0x2238, 0x223B},
+	{0x223E, 0x2247}, {0x2249, 0x224B}, {0x224D, 0x2251},
+	{0x2253, 0x225F}, {0x2262, 0x2263}, {0x2268, 0x2269},
+	{0x226C, 0x226D}, {0x2270, 0x2281}, {0x2284, 0x2285},
+	{0x2288, 0x2294}, {0x2296, 0x2298}, {0x229A, 0x22A4},
+	{0x22A6, 0x22BE}, {0x22C0, 0x2311}, {0x2313, 0x2319},
+	{0x231C, 0x2328}, {0x232B, 0x23E8}, {0x23ED, 0x23EF},
+	{0x23F1, 0x23F2}, {0x23F4, 0x2426}, {0x2440, 0x244A},
+	{0x24EA, 0x24EA}, {0x254C, 0x254F}, {0x2574, 0x257F},
+	{0x2590, 0x2591}, {0x2596, 0x259F}, {0x25A2, 0x25A2},
+	{0x25AA, 0x25B1}, {0x25B4, 0x25B5}, {0x25B8, 0x25BB},
+	{0x25BE, 0x25BF}, {0x25C2, 0x25C5}, {0x25C9, 0x25CA},
+	{0x25CC, 0x25CD}, {0x25D2, 0x25E1}, {0x25E6, 0x25EE},
+	{0x25F0, 0x25FC}, {0x25FF, 0x2604}, {0x2607, 0x2608},
+	{0x260A, 0x260D}, {0x2610, 0x2613}, {0x2616, 0x261B},
+	{0x261D, 0x261D}, {0x261F, 0x263F}, {0x2641, 0x2641},
+	{0x2643, 0x2647}, {0x2654, 0x265F}, {0x2662, 0x2662},
+	{0x2666, 0x2666}, {0x266B, 0x266B}, {0x266E, 0x266E},
+	{0x2670, 0x267E}, {0x2680, 0x2692}, {0x2694, 0x269D},
+	{0x26A0, 0x26A0}, {0x26A2, 0x26A9}, {0x26AC, 0x26BC},
+	{0x26C0, 0x26C3}, {0x26E2, 0x26E2}, {0x26E4, 0x26E7},
+	{0x2700, 0x2704}, {0x2706, 0x2709}, {0x270C, 0x2727},
+	{0x2729, 0x273C}, {0x273E, 0x274B}, {0x274D, 0x274D},
+	{0x274F, 0x2752}, {0x2756, 0x2756}, {0x2758, 0x2775},
+	{0x2780, 0x2794}, {0x2798, 0x27AF}, {0x27B1, 0x27BE},
+	{0x27C0, 0x27E5}, {0x27EE, 0x2984}, {0x2987, 0x2B1A},
+	{0x2B1D, 0x2B4F}, {0x2B51, 0x2B54}, {0x2B5A, 0x2B73},
+	{0x2B76, 0x2B95}, {0x2B97, 0x2C2E}, {0x2C30, 0x2C5E},
+	{0x2C60, 0x2CF3}, {0x2CF9, 0x2D25}, {0x2D27, 0x2D27},
+	{0x2D2D, 0x2D2D}, {0x2D30, 0x2D67}, {0x2D6F, 0x2D70},
+	{0x2D7F, 0x2D96}, {0x2DA0, 0x2DA6}, {0x2DA8, 0x2DAE},
+	{0x2DB0, 0x2DB6}, {0x2DB8, 0x2DBE}, {0x2DC0, 0x2DC6},
+	{0x2DC8, 0x2DCE}, {0x2DD0, 0x2DD6}, {0x2DD8, 0x2DDE},
+	{0x2DE0, 0x2E52}, {0x303F, 0x303F}, {0x4DC0, 0x4DFF},
+	{0xA4D0, 0xA62B}, {0xA640, 0xA6F7}, {0xA700, 0xA7BF},
+	{0xA7C2, 0xA7CA}, {0xA7F5, 0xA82C}, {0xA830, 0xA839},
+	{0xA840, 0xA877}, {0xA880, 0xA8C5}, {0xA8CE, 0xA8D9},
+	{0xA8E0, 0xA953}, {0xA95F, 0xA95F}, {0xA980, 0xA9CD},
+	{0xA9CF, 0xA9D9}, {0xA9DE, 0xA9FE}, {0xAA00, 0xAA36},
+	{0xAA40, 0xAA4D}, {0xAA50, 0xAA59}, {0xAA5C, 0xAAC2},
+	{0xAADB, 0xAAF6}, {0xAB01, 0xAB06}, {0xAB09, 0xAB0E},
+	{0xAB11, 0xAB16}, {0xAB20, 0xAB26}, {0xAB28, 0xAB2E},
+	{0xAB30, 0xAB6B}, {0xAB70, 0xABED}, {0xABF0, 0xABF9},
+	{0xD7B0, 0xD7C6}, {0xD7CB, 0xD7FB}, {0xD800, 0xDFFF},
+	{0xFB00, 0xFB06}, {0xFB13, 0xFB17}, {0xFB1D, 0xFB36},
+	{0xFB38, 0xFB3C}, {0xFB3E, 0xFB3E}, {0xFB40, 0xFB41},
+	{0xFB43, 0xFB44}, {0xFB46, 0xFBC1}, {0xFBD3, 0xFD3F},
+	{0xFD50, 0xFD8F}, {0xFD92, 0xFDC7}, {0xFDF0, 0xFDFD},
+	{0xFE20, 0xFE2F}, {0xFE70, 0xFE74}, {0xFE76, 0xFEFC},
+	{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFC}, {0x10000, 0x1000B},
+	{0x1000D, 0x10026}, {0x10028, 0x1003A}, {0x1003C, 0x1003D},
+	{0x1003F, 0x1004D}, {0x10050, 0x1005D}, {0x10080, 0x100FA},
+	{0x10100, 0x10102}, {0x10107, 0x10133}, {0x10137, 0x1018E},
+	{0x10190, 0x1019C}, {0x101A0, 0x101A0}, {0x101D0, 0x101FD},
+	{0x10280, 0x1029C}, {0x102A0, 0x102D0}, {0x102E0, 0x102FB},
+	{0x10300, 0x10323}, {0x1032D, 0x1034A}, {0x10350, 0x1037A},
+	{0x10380, 0x1039D}, {0x1039F, 0x103C3}, {0x103C8, 0x103D5},
+	{0x10400, 0x1049D}, {0x104A0, 0x104A9}, {0x104B0, 0x104D3},
+	{0x104D8, 0x104FB}, {0x10500, 0x10527}, {0x10530, 0x10563},
+	{0x1056F, 0x1056F}, {0x10600, 0x10736}, {0x10740, 0x10755},
+	{0x10760, 0x10767}, {0x10800, 0x10805}, {0x10808, 0x10808},
+	{0x1080A, 0x10835}, {0x10837, 0x10838}, {0x1083C, 0x1083C},
+	{0x1083F, 0x10855}, {0x10857, 0x1089E}, {0x108A7, 0x108AF},
+	{0x108E0, 0x108F2}, {0x108F4, 0x108F5}, {0x108FB, 0x1091B},
+	{0x1091F, 0x10939}, {0x1093F, 0x1093F}, {0x10980, 0x109B7},
+	{0x109BC, 0x109CF}, {0x109D2, 0x10A03}, {0x10A05, 0x10A06},
+	{0x10A0C, 0x10A13}, {0x10A15, 0x10A17}, {0x10A19, 0x10A35},
+	{0x10A38, 0x10A3A}, {0x10A3F, 0x10A48}, {0x10A50, 0x10A58},
+	{0x10A60, 0x10A9F}, {0x10AC0, 0x10AE6}, {0x10AEB, 0x10AF6},
+	{0x10B00, 0x10B35}, {0x10B39, 0x10B55}, {0x10B58, 0x10B72},
+	{0x10B78, 0x10B91}, {0x10B99, 0x10B9C}, {0x10BA9, 0x10BAF},
+	{0x10C00, 0x10C48}, {0x10C80, 0x10CB2}, {0x10CC0, 0x10CF2},
+	{0x10CFA, 0x10D27}, {0x10D30, 0x10D39}, {0x10E60, 0x10E7E},
+	{0x10E80, 0x10EA9}, {0x10EAB, 0x10EAD}, {0x10EB0, 0x10EB1},
+	{0x10F00, 0x10F27}, {0x10F30, 0x10F59}, {0x10FB0, 0x10FCB},
+	{0x10FE0, 0x10FF6}, {0x11000, 0x1104D}, {0x11052, 0x1106F},
+	{0x1107F, 0x110C1}, {0x110CD, 0x110CD}, {0x110D0, 0x110E8},
+	{0x110F0, 0x110F9}, {0x11100, 0x11134}, {0x11136, 0x11147},
+	{0x11150, 0x11176}, {0x11180, 0x111DF}, {0x111E1, 0x111F4},
+	{0x11200, 0x11211}, {0x11213, 0x1123E}, {0x11280, 0x11286},
+	{0x11288, 0x11288}, {0x1128A, 0x1128D}, {0x1128F, 0x1129D},
+	{0x1129F, 0x112A9}, {0x112B0, 0x112EA}, {0x112F0, 0x112F9},
+	{0x11300, 0x11303}, {0x11305, 0x1130C}, {0x1130F, 0x11310},
+	{0x11313, 0x11328}, {0x1132A, 0x11330}, {0x11332, 0x11333},
+	{0x11335, 0x11339}, {0x1133B, 0x11344}, {0x11347, 0x11348},
+	{0x1134B, 0x1134D}, {0x11350, 0x11350}, {0x11357, 0x11357},
+	{0x1135D, 0x11363}, {0x11366, 0x1136C}, {0x11370, 0x11374},
+	{0x11400, 0x1145B}, {0x1145D, 0x11461}, {0x11480, 0x114C7},
+	{0x114D0, 0x114D9}, {0x11580, 0x115B5}, {0x115B8, 0x115DD},
+	{0x11600, 0x11644}, {0x11650, 0x11659}, {0x11660, 0x1166C},
+	{0x11680, 0x116B8}, {0x116C0, 0x116C9}, {0x11700, 0x1171A},
+	{0x1171D, 0x1172B}, {0x11730, 0x1173F}, {0x11800, 0x1183B},
+	{0x118A0, 0x118F2}, {0x118FF, 0x11906}, {0x11909, 0x11909},
+	{0x1190C, 0x11913}, {0x11915, 0x11916}, {0x11918, 0x11935},
+	{0x11937, 0x11938}, {0x1193B, 0x11946}, {0x11950, 0x11959},
+	{0x119A0, 0x119A7}, {0x119AA, 0x119D7}, {0x119DA, 0x119E4},
+	{0x11A00, 0x11A47}, {0x11A50, 0x11AA2}, {0x11AC0, 0x11AF8},
+	{0x11C00, 0x11C08}, {0x11C0A, 0x11C36}, {0x11C38, 0x11C45},
+	{0x11C50, 0x11C6C}, {0x11C70, 0x11C8F}, {0x11C92, 0x11CA7},
+	{0x11CA9, 0x11CB6}, {0x11D00, 0x11D06}, {0x11D08, 0x11D09},
+	{0x11D0B, 0x11D36}, {0x11D3A, 0x11D3A}, {0x11D3C, 0x11D3D},
+	{0x11D3F, 0x11D47}, {0x11D50, 0x11D59}, {0x11D60, 0x11D65},
+	{0x11D67, 0x11D68}, {0x11D6A, 0x11D8E}, {0x11D90, 0x11D91},
+	{0x11D93, 0x11D98}, {0x11DA0, 0x11DA9}, {0x11EE0, 0x11EF8},
+	{0x11FB0, 0x11FB0}, {0x11FC0, 0x11FF1}, {0x11FFF, 0x12399},
+	{0x12400, 0x1246E}, {0x12470, 0x12474}, {0x12480, 0x12543},
+	{0x13000, 0x1342E}, {0x13430, 0x13438}, {0x14400, 0x14646},
+	{0x16800, 0x16A38}, {0x16A40, 0x16A5E}, {0x16A60, 0x16A69},
+	{0x16A6E, 0x16A6F}, {0x16AD0, 0x16AED}, {0x16AF0, 0x16AF5},
+	{0x16B00, 0x16B45}, {0x16B50, 0x16B59}, {0x16B5B, 0x16B61},
+	{0x16B63, 0x16B77}, {0x16B7D, 0x16B8F}, {0x16E40, 0x16E9A},
+	{0x16F00, 0x16F4A}, {0x16F4F, 0x16F87}, {0x16F8F, 0x16F9F},
+	{0x1BC00, 0x1BC6A}, {0x1BC70, 0x1BC7C}, {0x1BC80, 0x1BC88},
+	{0x1BC90, 0x1BC99}, {0x1BC9C, 0x1BCA3}, {0x1D000, 0x1D0F5},
+	{0x1D100, 0x1D126}, {0x1D129, 0x1D1E8}, {0x1D200, 0x1D245},
+	{0x1D2E0, 0x1D2F3}, {0x1D300, 0x1D356}, {0x1D360, 0x1D378},
+	{0x1D400, 0x1D454}, {0x1D456, 0x1D49C}, {0x1D49E, 0x1D49F},
+	{0x1D4A2, 0x1D4A2}, {0x1D4A5, 0x1D4A6}, {0x1D4A9, 0x1D4AC},
+	{0x1D4AE, 0x1D4B9}, {0x1D4BB, 0x1D4BB}, {0x1D4BD, 0x1D4C3},
+	{0x1D4C5, 0x1D505}, {0x1D507, 0x1D50A}, {0x1D50D, 0x1D514},
+	{0x1D516, 0x1D51C}, {0x1D51E, 0x1D539}, {0x1D53B, 0x1D53E},
+	{0x1D540, 0x1D544}, {0x1D546, 0x1D546}, {0x1D54A, 0x1D550},
+	{0x1D552, 0x1D6A5}, {0x1D6A8, 0x1D7CB}, {0x1D7CE, 0x1DA8B},
+	{0x1DA9B, 0x1DA9F}, {0x1DAA1, 0x1DAAF}, {0x1E000, 0x1E006},
+	{0x1E008, 0x1E018}, {0x1E01B, 0x1E021}, {0x1E023, 0x1E024},
+	{0x1E026, 0x1E02A}, {0x1E100, 0x1E12C}, {0x1E130, 0x1E13D},
+	{0x1E140, 0x1E149}, {0x1E14E, 0x1E14F}, {0x1E2C0, 0x1E2F9},
+	{0x1E2FF, 0x1E2FF}, {0x1E800, 0x1E8C4}, {0x1E8C7, 0x1E8D6},
+	{0x1E900, 0x1E94B}, {0x1E950, 0x1E959}, {0x1E95E, 0x1E95F},
+	{0x1EC71, 0x1ECB4}, {0x1ED01, 0x1ED3D}, {0x1EE00, 0x1EE03},
+	{0x1EE05, 0x1EE1F}, {0x1EE21, 0x1EE22}, {0x1EE24, 0x1EE24},
+	{0x1EE27, 0x1EE27}, {0x1EE29, 0x1EE32}, {0x1EE34, 0x1EE37},
+	{0x1EE39, 0x1EE39}, {0x1EE3B, 0x1EE3B}, {0x1EE42, 0x1EE42},
+	{0x1EE47, 0x1EE47}, {0x1EE49, 0x1EE49}, {0x1EE4B, 0x1EE4B},
+	{0x1EE4D, 0x1EE4F}, {0x1EE51, 0x1EE52}, {0x1EE54, 0x1EE54},
+	{0x1EE57, 0x1EE57}, {0x1EE59, 0x1EE59}, {0x1EE5B, 0x1EE5B},
+	{0x1EE5D, 0x1EE5D}, {0x1EE5F, 0x1EE5F}, {0x1EE61, 0x1EE62},
+	{0x1EE64, 0x1EE64}, {0x1EE67, 0x1EE6A}, {0x1EE6C, 0x1EE72},
+	{0x1EE74, 0x1EE77}, {0x1EE79, 0x1EE7C}, {0x1EE7E, 0x1EE7E},
+	{0x1EE80, 0x1EE89}, {0x1EE8B, 0x1EE9B}, {0x1EEA1, 0x1EEA3},
+	{0x1EEA5, 0x1EEA9}, {0x1EEAB, 0x1EEBB}, {0x1EEF0, 0x1EEF1},
+	{0x1F000, 0x1F003}, {0x1F005, 0x1F02B}, {0x1F030, 0x1F093},
+	{0x1F0A0, 0x1F0AE}, {0x1F0B1, 0x1F0BF}, {0x1F0C1, 0x1F0CE},
+	{0x1F0D1, 0x1F0F5}, {0x1F10B, 0x1F10F}, {0x1F12E, 0x1F12F},
+	{0x1F16A, 0x1F16F}, {0x1F1AD, 0x1F1AD}, {0x1F1E6, 0x1F1FF},
+	{0x1F321, 0x1F32C}, {0x1F336, 0x1F336}, {0x1F37D, 0x1F37D},
+	{0x1F394, 0x1F39F}, {0x1F3CB, 0x1F3CE}, {0x1F3D4, 0x1F3DF},
+	{0x1F3F1, 0x1F3F3}, {0x1F3F5, 0x1F3F7}, {0x1F43F, 0x1F43F},
+	{0x1F441, 0x1F441}, {0x1F4FD, 0x1F4FE}, {0x1F53E, 0x1F54A},
+	{0x1F54F, 0x1F54F}, {0x1F568, 0x1F579}, {0x1F57B, 0x1F594},
+	{0x1F597, 0x1F5A3}, {0x1F5A5, 0x1F5FA}, {0x1F650, 0x1F67F},
+	{0x1F6C6, 0x1F6CB}, {0x1F6CD, 0x1F6CF}, {0x1F6D3, 0x1F6D4},
+	{0x1F6E0, 0x1F6EA}, {0x1F6F0, 0x1F6F3}, {0x1F700, 0x1F773},
+	{0x1F780, 0x1F7D8}, {0x1F800, 0x1F80B}, {0x1F810, 0x1F847},
+	{0x1F850, 0x1F859}, {0x1F860, 0x1F887}, {0x1F890, 0x1F8AD},
+	{0x1F8B0, 0x1F8B1}, {0x1F900, 0x1F90B}, {0x1F93B, 0x1F93B},
+	{0x1F946, 0x1F946}, {0x1FA00, 0x1FA53}, {0x1FA60, 0x1FA6D},
+	{0x1FB00, 0x1FB92}, {0x1FB94, 0x1FBCA}, {0x1FBF0, 0x1FBF9},
+	{0xE0001, 0xE0001}, {0xE0020, 0xE007F},
+}
+
+var emoji = table{
+	{0x203C, 0x203C}, {0x2049, 0x2049}, {0x2122, 0x2122},
+	{0x2139, 0x2139}, {0x2194, 0x2199}, {0x21A9, 0x21AA},
+	{0x231A, 0x231B}, {0x2328, 0x2328}, {0x2388, 0x2388},
+	{0x23CF, 0x23CF}, {0x23E9, 0x23F3}, {0x23F8, 0x23FA},
+	{0x24C2, 0x24C2}, {0x25AA, 0x25AB}, {0x25B6, 0x25B6},
+	{0x25C0, 0x25C0}, {0x25FB, 0x25FE}, {0x2600, 0x2605},
+	{0x2607, 0x2612}, {0x2614, 0x2685}, {0x2690, 0x2705},
+	{0x2708, 0x2712}, {0x2714, 0x2714}, {0x2716, 0x2716},
+	{0x271D, 0x271D}, {0x2721, 0x2721}, {0x2728, 0x2728},
+	{0x2733, 0x2734}, {0x2744, 0x2744}, {0x2747, 0x2747},
+	{0x274C, 0x274C}, {0x274E, 0x274E}, {0x2753, 0x2755},
+	{0x2757, 0x2757}, {0x2763, 0x2767}, {0x2795, 0x2797},
+	{0x27A1, 0x27A1}, {0x27B0, 0x27B0}, {0x27BF, 0x27BF},
+	{0x2934, 0x2935}, {0x2B05, 0x2B07}, {0x2B1B, 0x2B1C},
+	{0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x3030, 0x3030},
+	{0x303D, 0x303D}, {0x3297, 0x3297}, {0x3299, 0x3299},
+	{0x1F000, 0x1F0FF}, {0x1F10D, 0x1F10F}, {0x1F12F, 0x1F12F},
+	{0x1F16C, 0x1F171}, {0x1F17E, 0x1F17F}, {0x1F18E, 0x1F18E},
+	{0x1F191, 0x1F19A}, {0x1F1AD, 0x1F1E5}, {0x1F201, 0x1F20F},
+	{0x1F21A, 0x1F21A}, {0x1F22F, 0x1F22F}, {0x1F232, 0x1F23A},
+	{0x1F23C, 0x1F23F}, {0x1F249, 0x1F3FA}, {0x1F400, 0x1F53D},
+	{0x1F546, 0x1F64F}, {0x1F680, 0x1F6FF}, {0x1F774, 0x1F77F},
+	{0x1F7D5, 0x1F7FF}, {0x1F80C, 0x1F80F}, {0x1F848, 0x1F84F},
+	{0x1F85A, 0x1F85F}, {0x1F888, 0x1F88F}, {0x1F8AE, 0x1F8FF},
+	{0x1F90C, 0x1F93A}, {0x1F93C, 0x1F945}, {0x1F947, 0x1FAFF},
+	{0x1FC00, 0x1FFFD},
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_test.go

@@ -0,0 +1,426 @@
+// +build !js,!appengine
+
+package runewidth
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"os"
+	"sort"
+	"testing"
+	"unicode/utf8"
+)
+
+var _ sort.Interface = (*table)(nil) // ensure that type "table" does implement sort.Interface
+
+func init() {
+	os.Setenv("RUNEWIDTH_EASTASIAN", "")
+	handleEnv()
+}
+
+func (t table) Len() int {
+	return len(t)
+}
+
+func (t table) Less(i, j int) bool {
+	return t[i].first < t[j].first
+}
+
+func (t *table) Swap(i, j int) {
+	(*t)[i], (*t)[j] = (*t)[j], (*t)[i]
+}
+
+type tableInfo struct {
+	tbl     table
+	name    string
+	wantN   int
+	wantSHA string
+}
+
+var tables = []tableInfo{
+	{private, "private", 137468, "a4a641206dc8c5de80bd9f03515a54a706a5a4904c7684dc6a33d65c967a51b2"},
+	{nonprint, "nonprint", 2143, "288904683eb225e7c4c0bd3ee481b53e8dace404ec31d443afdbc4d13729fe95"},
+	{combining, "combining", 465, "3cce13deb5e23f9f7327f2b1ef162328285a7dcf277a98302a8f7cdd43971268"},
+	{doublewidth, "doublewidth", 182440, "3d16eda8650dc2c92d6318d32f0b4a74fda5a278db2d4544b1dd65863394823c"},
+	{ambiguous, "ambiguous", 138739, "d05e339a10f296de6547ff3d6c5aee32f627f6555477afebd4a3b7e3cf74c9e3"},
+	{emoji, "emoji", 3535, "9ec17351601d49c535658de8d129c1d0ccda2e620669fc39a2faaee7dedcef6d"},
+	{narrow, "narrow", 111, "fa897699c5e3cd9141c638d539331b0bdd508b874e22996c5e929767d455fc5a"},
+	{neutral, "neutral", 27333, "5455f5e75c307f70b4e9b2384dc5a8bcd91a4c5e2b24b2b185dfad4d860ee5c2"},
+}
+
+func TestTableChecksums(t *testing.T) {
+	for _, ti := range tables {
+		gotN := 0
+		buf := make([]byte, utf8.MaxRune+1)
+		for r := rune(0); r <= utf8.MaxRune; r++ {
+			if inTable(r, ti.tbl) {
+				gotN++
+				buf[r] = 1
+			}
+		}
+		gotSHA := fmt.Sprintf("%x", sha256.Sum256(buf))
+		if gotN != ti.wantN || gotSHA != ti.wantSHA {
+			t.Errorf("table = %s,\n\tn = %d want %d,\n\tsha256 = %s want %s", ti.name, gotN, ti.wantN, gotSHA, ti.wantSHA)
+		}
+	}
+}
+
+func TestRuneWidthChecksums(t *testing.T) {
+	var testcases = []struct {
+		name           string
+		eastAsianWidth bool
+		wantSHA        string
+	}{
+		{"ea-no", false, "4eb632b105d3b2c800dda9141381d0b8a95250a3a5c7f1a5ca2c4d4daaa85234"},
+		{"ea-yes", true, "c2ddc3bdf42d81d4c23050e21eda46eb639b38b15322d35e8eb6c26f3b83ce92"},
+	}
+
+	for _, testcase := range testcases {
+		c := NewCondition()
+		c.EastAsianWidth = testcase.eastAsianWidth
+		buf := make([]byte, utf8.MaxRune+1)
+		for r := rune(0); r <= utf8.MaxRune; r++ {
+			buf[r] = byte(c.RuneWidth(r))
+		}
+		gotSHA := fmt.Sprintf("%x", sha256.Sum256(buf))
+		if gotSHA != testcase.wantSHA {
+			t.Errorf("TestRuneWidthChecksums = %s,\n\tsha256 = %s want %s",
+				testcase.name, gotSHA, testcase.wantSHA)
+		}
+	}
+}
+
+func checkInterval(first, last rune) bool {
+	return first >= 0 && first <= utf8.MaxRune &&
+		last >= 0 && last <= utf8.MaxRune &&
+		first <= last
+}
+
+func isCompact(t *testing.T, ti *tableInfo) bool {
+	tbl := ti.tbl
+	for i := range tbl {
+		e := tbl[i]
+		if !checkInterval(e.first, e.last) { // sanity check
+			t.Errorf("table invalid: table = %s index = %d %v", ti.name, i, e)
+			return false
+		}
+		if i+1 < len(tbl) && e.last+1 >= tbl[i+1].first { // can be combined into one entry
+			t.Errorf("table not compact: table = %s index = %d %v %v", ti.name, i, e, tbl[i+1])
+			return false
+		}
+	}
+	return true
+}
+
+func TestSorted(t *testing.T) {
+	for _, ti := range tables {
+		if !sort.IsSorted(&ti.tbl) {
+			t.Errorf("table not sorted: %s", ti.name)
+		}
+		if !isCompact(t, &ti) {
+			t.Errorf("table not compact: %s", ti.name)
+		}
+	}
+}
+
+var runewidthtests = []struct {
+	in     rune
+	out    int
+	eaout  int
+	nseout int
+}{
+	{'世', 2, 2, 2},
+	{'界', 2, 2, 2},
+	{'ｾ', 1, 1, 1},
+	{'ｶ', 1, 1, 1},
+	{'ｲ', 1, 1, 1},
+	{'☆', 1, 2, 2}, // double width in ambiguous
+	{'☺', 1, 1, 2},
+	{'☻', 1, 1, 2},
+	{'♥', 1, 2, 2},
+	{'♦', 1, 1, 2},
+	{'♣', 1, 2, 2},
+	{'♠', 1, 2, 2},
+	{'♂', 1, 2, 2},
+	{'♀', 1, 2, 2},
+	{'♪', 1, 2, 2},
+	{'♫', 1, 1, 2},
+	{'☼', 1, 1, 2},
+	{'↕', 1, 2, 2},
+	{'‼', 1, 1, 2},
+	{'↔', 1, 2, 2},
+	{'\x00', 0, 0, 0},
+	{'\x01', 0, 0, 0},
+	{'\u0300', 0, 0, 0},
+	{'\u2028', 0, 0, 0},
+	{'\u2029', 0, 0, 0},
+	{'a', 1, 1, 1}, // ASCII classified as "na" (narrow)
+	{'⟦', 1, 1, 1}, // non-ASCII classified as "na" (narrow)
+	{'👁', 1, 1, 2},
+}
+
+func TestRuneWidth(t *testing.T) {
+	c := NewCondition()
+	c.EastAsianWidth = false
+	for _, tt := range runewidthtests {
+		if out := c.RuneWidth(tt.in); out != tt.out {
+			t.Errorf("RuneWidth(%q) = %d, want %d (EastAsianWidth=false)", tt.in, out, tt.out)
+		}
+	}
+	c.EastAsianWidth = true
+	for _, tt := range runewidthtests {
+		if out := c.RuneWidth(tt.in); out != tt.eaout {
+			t.Errorf("RuneWidth(%q) = %d, want %d (EastAsianWidth=true)", tt.in, out, tt.eaout)
+		}
+	}
+	c.StrictEmojiNeutral = false
+	for _, tt := range runewidthtests {
+		if out := c.RuneWidth(tt.in); out != tt.nseout {
+			t.Errorf("RuneWidth(%q) = %d, want %d (StrictEmojiNeutral=false)", tt.in, out, tt.eaout)
+		}
+	}
+}
+
+var isambiguouswidthtests = []struct {
+	in  rune
+	out bool
+}{
+	{'世', false},
+	{'■', true},
+	{'界', false},
+	{'○', true},
+	{'㈱', false},
+	{'①', true},
+	{'②', true},
+	{'③', true},
+	{'④', true},
+	{'⑤', true},
+	{'⑥', true},
+	{'⑦', true},
+	{'⑧', true},
+	{'⑨', true},
+	{'⑩', true},
+	{'⑪', true},
+	{'⑫', true},
+	{'⑬', true},
+	{'⑭', true},
+	{'⑮', true},
+	{'⑯', true},
+	{'⑰', true},
+	{'⑱', true},
+	{'⑲', true},
+	{'⑳', true},
+	{'☆', true},
+}
+
+func TestIsAmbiguousWidth(t *testing.T) {
+	for _, tt := range isambiguouswidthtests {
+		if out := IsAmbiguousWidth(tt.in); out != tt.out {
+			t.Errorf("IsAmbiguousWidth(%q) = %v, want %v", tt.in, out, tt.out)
+		}
+	}
+}
+
+var stringwidthtests = []struct {
+	in    string
+	out   int
+	eaout int
+}{
+	{"■㈱の世界①", 10, 12},
+	{"スター☆", 7, 8},
+	{"つのだ☆HIRO", 11, 12},
+}
+
+func TestStringWidth(t *testing.T) {
+	c := NewCondition()
+	c.EastAsianWidth = false
+	for _, tt := range stringwidthtests {
+		if out := c.StringWidth(tt.in); out != tt.out {
+			t.Errorf("StringWidth(%q) = %d, want %d", tt.in, out, tt.out)
+		}
+	}
+	c.EastAsianWidth = true
+	for _, tt := range stringwidthtests {
+		if out := c.StringWidth(tt.in); out != tt.eaout {
+			t.Errorf("StringWidth(%q) = %d, want %d (EA)", tt.in, out, tt.eaout)
+		}
+	}
+}
+
+func TestStringWidthInvalid(t *testing.T) {
+	s := "こんにちわ\x00世界"
+	if out := StringWidth(s); out != 14 {
+		t.Errorf("StringWidth(%q) = %d, want %d", s, out, 14)
+	}
+}
+
+func TestTruncateSmaller(t *testing.T) {
+	s := "あいうえお"
+	expected := "あいうえお"
+
+	if out := Truncate(s, 10, "..."); out != expected {
+		t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestTruncate(t *testing.T) {
+	s := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
+	expected := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおお..."
+	out := Truncate(s, 80, "...")
+	if out != expected {
+		t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
+	}
+	width := StringWidth(out)
+	if width != 79 {
+		t.Errorf("width of Truncate(%q) should be %d, but %d", s, 79, width)
+	}
+}
+
+func TestTruncateFit(t *testing.T) {
+	s := "aあいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
+	expected := "aあいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおお..."
+
+	out := Truncate(s, 80, "...")
+	if out != expected {
+		t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
+	}
+	width := StringWidth(out)
+	if width != 80 {
+		t.Errorf("width of Truncate(%q) should be %d, but %d", s, 80, width)
+	}
+}
+
+func TestTruncateJustFit(t *testing.T) {
+	s := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
+	expected := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
+
+	out := Truncate(s, 80, "...")
+	if out != expected {
+		t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
+	}
+	width := StringWidth(out)
+	if width != 80 {
+		t.Errorf("width of Truncate(%q) should be %d, but %d", s, 80, width)
+	}
+}
+
+func TestWrap(t *testing.T) {
+	s := `東京特許許可局局長はよく柿喰う客だ/東京特許許可局局長はよく柿喰う客だ
+123456789012345678901234567890
+
+END`
+	expected := `東京特許許可局局長はよく柿喰う
+客だ/東京特許許可局局長はよく
+柿喰う客だ
+123456789012345678901234567890
+
+END`
+
+	if out := Wrap(s, 30); out != expected {
+		t.Errorf("Wrap(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestTruncateNoNeeded(t *testing.T) {
+	s := "あいうえおあい"
+	expected := "あいうえおあい"
+
+	if out := Truncate(s, 80, "..."); out != expected {
+		t.Errorf("Truncate(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+var isneutralwidthtests = []struct {
+	in  rune
+	out bool
+}{
+	{'→', false},
+	{'┊', false},
+	{'┈', false},
+	{'～', false},
+	{'└', false},
+	{'⣀', true},
+	{'⣀', true},
+}
+
+func TestIsNeutralWidth(t *testing.T) {
+	for _, tt := range isneutralwidthtests {
+		if out := IsNeutralWidth(tt.in); out != tt.out {
+			t.Errorf("IsNeutralWidth(%q) = %v, want %v", tt.in, out, tt.out)
+		}
+	}
+}
+
+func TestFillLeft(t *testing.T) {
+	s := "あxいうえお"
+	expected := "    あxいうえお"
+
+	if out := FillLeft(s, 15); out != expected {
+		t.Errorf("FillLeft(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestFillLeftFit(t *testing.T) {
+	s := "あいうえお"
+	expected := "あいうえお"
+
+	if out := FillLeft(s, 10); out != expected {
+		t.Errorf("FillLeft(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestFillRight(t *testing.T) {
+	s := "あxいうえお"
+	expected := "あxいうえお    "
+
+	if out := FillRight(s, 15); out != expected {
+		t.Errorf("FillRight(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestFillRightFit(t *testing.T) {
+	s := "あいうえお"
+	expected := "あいうえお"
+
+	if out := FillRight(s, 10); out != expected {
+		t.Errorf("FillRight(%q) = %q, want %q", s, out, expected)
+	}
+}
+
+func TestEnv(t *testing.T) {
+	old := os.Getenv("RUNEWIDTH_EASTASIAN")
+	defer os.Setenv("RUNEWIDTH_EASTASIAN", old)
+
+	os.Setenv("RUNEWIDTH_EASTASIAN", "0")
+	handleEnv()
+
+	if w := RuneWidth('│'); w != 1 {
+		t.Errorf("RuneWidth('│') = %d, want %d", w, 1)
+	}
+}
+
+func TestZeroWidthJoiner(t *testing.T) {
+	c := NewCondition()
+
+	var tests = []struct {
+		in   string
+		want int
+	}{
+		{"👩", 2},
+		{"👩‍", 2},
+		{"👩‍🍳", 2},
+		{"‍🍳", 2},
+		{"👨‍👨", 2},
+		{"👨‍👨‍👧", 2},
+		{"🏳️‍🌈", 1},
+		{"あ👩‍🍳い", 6},
+		{"あ‍🍳い", 6},
+		{"あ‍い", 4},
+	}
+
+	for _, tt := range tests {
+		if got := c.StringWidth(tt.in); got != tt.want {
+			t.Errorf("StringWidth(%q) = %d, want %d", tt.in, got, tt.want)
+		}
+	}
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/runewidth_windows.go

@@ -0,0 +1,28 @@
+// +build windows
+// +build !appengine
+
+package runewidth
+
+import (
+	"syscall"
+)
+
+var (
+	kernel32               = syscall.NewLazyDLL("kernel32")
+	procGetConsoleOutputCP = kernel32.NewProc("GetConsoleOutputCP")
+)
+
+// IsEastAsian return true if the current locale is CJK
+func IsEastAsian() bool {
+	r1, _, _ := procGetConsoleOutputCP.Call()
+	if r1 == 0 {
+		return false
+	}
+
+	switch int(r1) {
+	case 932, 51932, 936, 949, 950:
+		return true
+	}
+
+	return false
+}

go/pkg/mod/github.com/mattn/go-runewidth@v0.0.13/script/generate.go

@@ -0,0 +1,206 @@
+// +build ignore
+
+// Generate runewidth_table.go from data at https://unicode.org/
+
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"strings"
+)
+
+type rrange struct {
+	lo rune
+	hi rune
+}
+
+func generate(out io.Writer, v string, arr []rrange) {
+	fmt.Fprintf(out, "var %s = table{\n\t", v)
+	for i := 0; i < len(arr); i++ {
+		fmt.Fprintf(out, "{0x%04X, 0x%04X},", arr[i].lo, arr[i].hi)
+		if i < len(arr)-1 {
+			if i%3 == 2 {
+				fmt.Fprint(out, "\n\t")
+			} else {
+				fmt.Fprint(out, " ")
+			}
+		}
+	}
+	fmt.Fprintln(out, "\n}")
+}
+
+func shapeup(p *[]rrange) {
+	arr := *p
+	for i := 0; i < len(arr)-1; i++ {
+		if arr[i].hi+1 == arr[i+1].lo {
+			lo := arr[i].lo
+			arr = append(arr[:i], arr[i+1:]...)
+			arr[i].lo = lo
+			i--
+		}
+	}
+	*p = arr
+}
+
+func eastasian(out io.Writer, in io.Reader) error {
+	scanner := bufio.NewScanner(in)
+
+	dbl := []rrange{}
+	amb := []rrange{}
+	cmb := []rrange{}
+	na := []rrange{}
+	nu := []rrange{}
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "#") {
+			continue
+		}
+		var r1, r2 rune
+		var ss string
+		n, err := fmt.Sscanf(line, "%x..%x;%s ", &r1, &r2, &ss)
+		if err != nil || n == 2 {
+			n, err = fmt.Sscanf(line, "%x;%s ", &r1, &ss)
+			if err != nil || n != 2 {
+				continue
+			}
+			r2 = r1
+		}
+
+		if strings.Index(line, "COMBINING") != -1 {
+			cmb = append(cmb, rrange{
+				lo: r1,
+				hi: r2,
+			})
+		}
+
+		switch ss {
+		case "W", "F":
+			dbl = append(dbl, rrange{
+				lo: r1,
+				hi: r2,
+			})
+		case "A":
+			amb = append(amb, rrange{
+				lo: r1,
+				hi: r2,
+			})
+		case "Na":
+			na = append(na, rrange{
+				lo: r1,
+				hi: r2,
+			})
+		case "N":
+			nu = append(nu, rrange{
+				lo: r1,
+				hi: r2,
+			})
+		}
+	}
+
+	shapeup(&cmb)
+	generate(out, "combining", cmb)
+	fmt.Fprintln(out)
+
+	shapeup(&dbl)
+	generate(out, "doublewidth", dbl)
+	fmt.Fprintln(out)
+
+	shapeup(&amb)
+	generate(out, "ambiguous", amb)
+	fmt.Fprint(out)
+
+	shapeup(&na)
+	generate(out, "narrow", na)
+	fmt.Fprintln(out)
+
+	shapeup(&nu)
+	generate(out, "neutral", nu)
+	fmt.Fprintln(out)
+
+	return nil
+}
+
+func emoji(out io.Writer, in io.Reader) error {
+	scanner := bufio.NewScanner(in)
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.Index(line, "Extended_Pictographic ; No") != -1 {
+			break
+		}
+	}
+
+	if scanner.Err() != nil {
+		return scanner.Err()
+	}
+
+	arr := []rrange{}
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, "#") {
+			continue
+		}
+		var r1, r2 rune
+		n, err := fmt.Sscanf(line, "%x..%x ", &r1, &r2)
+		if err != nil || n == 1 {
+			n, err = fmt.Sscanf(line, "%x ", &r1)
+			if err != nil || n != 1 {
+				continue
+			}
+			r2 = r1
+		}
+		if r2 < 0xFF {
+			continue
+		}
+
+		arr = append(arr, rrange{
+			lo: r1,
+			hi: r2,
+		})
+	}
+
+	shapeup(&arr)
+	generate(out, "emoji", arr)
+
+	return nil
+}
+
+func main() {
+	var buf bytes.Buffer
+	f := &buf
+	fmt.Fprint(f, "// Code generated by script/generate.go. DO NOT EDIT.\n\n")
+
+	fmt.Fprint(f, "package runewidth\n\n")
+
+	resp, err := http.Get("https://unicode.org/Public/13.0.0/ucd/EastAsianWidth.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	eastasian(f, resp.Body)
+
+	resp, err = http.Get("https://unicode.org/Public/13.0.0/ucd/emoji/emoji-data.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	emoji(f, resp.Body)
+
+	out, err := format.Source(f.Bytes())
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = ioutil.WriteFile("runewidth_table.go", out, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+}